{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["vehicle", "disease", "animal", "event", "astronomical object", "geographical phenomenon"], "input": "The symptoms of CJD are caused by the progressive death of the brain 's nerve cells , which are associated with the build-up of abnormal prion proteins forming in the brain ."}
{"vehicle": [], "disease": [], "animal": [], "event": [], "astronomical object": [], "geographical phenomenon": []}